Born circa 428 B.C.E., ancient Greek philosopher Plato was a student of Socrates and a teacher of Aristotle. His writings explored justice, beauty and equality, and also contained discussions in aesthetics, political philosophy, theology, cosmology, epistemology and the philosophy of language. Plato founded the Academy in Athens, one of the first institutions of higher learning in the Western world. He died in Athens circa 348 B.C.E.